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517 325 639 841 792
What will be the first digit of the second highest number after the positions of the 2nd and 3rd digits within each number are interchanged?
What will be the first digit of the second highest number after the positions of the 2nd and 3rd digits within each number are interchanged?
- a)8
- b)2
- c)7
- d)9
Correct answer is option 'C'. Can you explain this answer?
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517 325 639 841 792What will be the first digit of the second highest ...
To find the first digit of the second highest number after interchanging the positions of the 2nd and 3rd digits within each number, we need to follow these steps:
Step 1: Interchange the positions of the 2nd and 3rd digits within each number.
- For the number 517, interchanging the positions of the 2nd and 3rd digits gives us 571.
- For the number 325, interchanging the positions of the 2nd and 3rd digits gives us 352.
- For the number 639, interchanging the positions of the 2nd and 3rd digits gives us 693.
- For the number 841, interchanging the positions of the 2nd and 3rd digits gives us 814.
- For the number 792, interchanging the positions of the 2nd and 3rd digits gives us 729.
Step 2: Arrange the numbers in descending order.
- The numbers, after interchanging the positions of the 2nd and 3rd digits, are 571, 352, 693, 814, 729.
- Arranging them in descending order gives us 814, 729, 693, 571, 352.
Step 3: Identify the second highest number.
- The second highest number is 729.
Step 4: Find the first digit of the second highest number.
- The first digit of 729 is 7.
Therefore, the first digit of the second highest number after interchanging the positions of the 2nd and 3rd digits within each number is 7.
Hence, the correct answer is option C, 7.
Step 1: Interchange the positions of the 2nd and 3rd digits within each number.
- For the number 517, interchanging the positions of the 2nd and 3rd digits gives us 571.
- For the number 325, interchanging the positions of the 2nd and 3rd digits gives us 352.
- For the number 639, interchanging the positions of the 2nd and 3rd digits gives us 693.
- For the number 841, interchanging the positions of the 2nd and 3rd digits gives us 814.
- For the number 792, interchanging the positions of the 2nd and 3rd digits gives us 729.
Step 2: Arrange the numbers in descending order.
- The numbers, after interchanging the positions of the 2nd and 3rd digits, are 571, 352, 693, 814, 729.
- Arranging them in descending order gives us 814, 729, 693, 571, 352.
Step 3: Identify the second highest number.
- The second highest number is 729.
Step 4: Find the first digit of the second highest number.
- The first digit of 729 is 7.
Therefore, the first digit of the second highest number after interchanging the positions of the 2nd and 3rd digits within each number is 7.
Hence, the correct answer is option C, 7.
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Community Answer
517 325 639 841 792What will be the first digit of the second highest ...
Interchanging the 2nd and 3rd digits in each number:
- 517→517
- 325→352
- 639→693
- 841→481
- 792→729
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517 325 639 841 792What will be the first digit of the second highest number after the positions of the 2nd and 3rd digits within each number are interchanged?a)8b)2c)7d)9Correct answer is option 'C'. Can you explain this answer?
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